Personal Portfolio feedback : Help, please

Hi Campers,

I finally finished the Portfolio project after struggling for so long. I know a lot still needs to be done to make it more aesthetically pleasing, but I am satisfied with what I have been able to accomplish to this point. If anyone can tell me what I can do to help it look a bit cleaner it would be much appreciated!

Also, I tried posting the work on git hub in a repository and when I launched the browser, it seemed that the styling wasn’t being used. Can anyone explain why and how to fix this problem? Thanks!

Codepen for reference: